drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in OpenSSL
Name: |
Denial of Service in OpenSSL |
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ID: |
USN-4891-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10 |
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Datum: |
Fr, 26. März 2021, 00:00 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3449 |
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Applikationen: |
OpenSSL |
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Originalnachricht |
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --EtzaCu3YHJZx6l53KIYIPf8MGTPcaRfaD Content-Type: multipart/mixed; boundary="N4jQj32vt8qR6ngsuKHlGWFALywoFmDBV"; protected-headers="v1" From: Marc Deslauriers <marc.deslauriers@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: "ubuntu-security-announce@lists.ubuntu.com" <ubuntu-security-announce@lists.ubuntu.com> Message-ID: <d9f5529e-ad8f-f629-a4da-4cb29854fad0@canonical.com> Subject: [USN-4891-1] OpenSSL vulnerability
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========================================================================== Ubuntu Security Notice USN-4891-1 March 25, 2021
openssl vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS
Summary:
OpenSSL could be made to crash or run programs if it received specially crafted network traffic.
Software Description: - openssl: Secure Socket Layer (SSL) cryptographic library and tools
Details:
It was discovered that OpenSSL incorrectly handled certain renegotiation ClientHello messages. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.10: libssl1.1 1.1.1f-1ubuntu4.3
Ubuntu 20.04 LTS: libssl1.1 1.1.1f-1ubuntu2.3
Ubuntu 18.04 LTS: libssl1.1 1.1.1-1ubuntu2.1~18.04.9
After a standard system update you need to reboot your computer to make all the necessary changes.
References: https://ubuntu.com/security/notices/USN-4891-1 CVE-2021-3449
Package Information: https://launchpad.net/ubuntu/+source/openssl/1.1.1f-1ubuntu4.3 https://launchpad.net/ubuntu/+source/openssl/1.1.1f-1ubuntu2.3 https://launchpad.net/ubuntu/+source/openssl/1.1.1-1ubuntu2.1~18.04.9
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